Global shipment of PCs, tablets, ultramobile devices and mobile phones will top 2.5 billion units shipped by the end of 2014, according to research firm Gartner. Smartphones will be the driving sales leader, but ultramobiles such as tablets, hybrid and ultrabooks will drastically increase an estimated 54 percent growth.

"The device market continues to evolve, with buyers deciding which combination of devices is required to meet their wants and needs," said Ranjit Atwal, Gartner research director, in a statement. "Meanwhile users continue to move away from the traditional PC (notebooks and desk-based) as it becomes more of a shared content creation tool, while the greater flexibility of tablets, hybrids and lighter notebooks address users' increasingly different demands."

Although Apple iOS and Mac OS remain extremely popular, Google Android-powered devices will lead the pack with 1 billion units shipped. Android will have 25.6 percent year-over-year growth, compared to 29 percent for Apple and 10 percent for Microsoft Windows.